All the time a computer is switched on, its operating system software system has to stay in the
-
main storage
-
primary storage
-
floppy disk
-
disk driver
B
Correct answer
Explanation
The operating system must reside in primary storage (main memory/RAM) whenever the computer is powered on because it needs to actively manage hardware, handle interrupts, and coordinate system operations. While parts of the OS may be swapped to disk (disk driver), the core functionality must remain in primary storage for real-time execution. Floppy disks are too slow for active OS operation.